Locomotive draft chamber



March 31, 1925. 1,531,332

G. s. BOYLER LOCOMOTI VE DRAFT CHAMBER Filed April 8, 1924 v 4 Sheets-Sheet 1 INVENTDFL IBEEIREE.5.BEIYL.E R.

.3 M f 6' ATTYE.

March 31, 1925.

G. s BOYLER LOCOMOTIVE DRAFT CHAMBER Filed April 2 1924 4 Sheets-Sheet 2 R D T H E V W EIIIFK'EEEiBEIYLEH.

IIII ATTYE 4 Sheets-Sheet 5 ma Rm Y m T mm A s s B a Q & m .5 mwfll. XV w mifi I, 1 1

G. S. BOYLER LOCOMOTIVE DRAFT CHAMBER Filed April 1924 March 31, 1925.

March 31, 1925.

G. S. BOYLER LOCOMOTIVE DRAFT CHAMBER Filed April 28, 1924 4 Sheets-Sheet 4 HIVEIITUR. EEUHGE.5.BUYL ER.

ATTYEQ TORONTO, ONTARIO; CANADA.

LO GUMOTIVE T D'R HFT GHAMBERL Application fild z tpvil 28;

'ioij ivronto, win the" Improvement Chambers, of .vli'i-ch the followingg specifiention.

My invention rel-sites to. iinpio'vemen-te in lOCOl'ElOllYQ draft ehzirnbers unit theobjeet of the invention isto profviile .COFrSU'UCilQlL of chamber whit-h may be very-quickly one;

' willed or disassembled, thereby i zaing tiie time; liibouri 11ml (it' t air to this. part ()f'Z'L locoi-notive lii'lt'l I piuxi cl ing .2! structnre Wlllt' fitting *niittstrong, and it co iiiei'it anal more 1 i 'i n 'iiutlinal Sectional View y threngn a draftchnmner.

y 'tlraztt' clian'ibeinis a. perspective sdetaiksh-owing the end i oi; my draft chamber; located Fig.3 forward in position within a portionotthe-liocly of *wniotire.

r 4 is ii sectional perspective View taken throngh'the l) tly (if a lOCOlHOtlYB and the draft el: iber intern)eclintely of its length, mg the rear \VH'll-SiTUClZUIC' eithe :ilit-i'u ewes sectional View throughi've taken online: 5f Fig. 2..

L cross sectionalwiew similar to:

.onli'ne ti fi Fig, 2.

r;(t'tl()l121l detail of my key se invviiigs like (:hnriietereot referlieute corresponding parts in each e irony of i n lOCO-Il'iOtlVC'P1 nsniil exhaust: nozzle 2 l tnclzfil.

head of the boiler; fromr, cinrtainin gf the extending from e I? is :1 stnti-fmary ileml' iilate exl as; transversely otthe upper portion 1924. i Serial- 1th 7892657;

hle ilee'dlpl ate the iqiiperizpor 1 tion- Oii which turned so as to form n :tra-ns verseen-vertecl groovepOllilQli, as inclleatetl at the edge portion: 109 ofwvliich fitsinto the groove-9 ot'ith-e: stntioim-rydeatlv plate 91'- The lateral V vert ieal edges of theremovable. cleatlwpl iiie. 10 =11 re provided with extensions 11 "\vh icliiareoil'set rear-x Elly, .asindieated; at seeFig; 2, so as'to-"fit against'thefor- WilltlxfitCEvOfthe stationary (lend plate 9 at" eneh side of the orifice 9*,the body Otthe (lend plate 10 pro cting through such orifice V .1 by means of the off-set portions -12.

The lower edge of the renwvnble lend plate 10 is rolled up to form. a. trirneverse groove portion 13.

14. andlS-nreguide Pli'ttQS eeenredto the internal face (1-1 the well of the-locomotive body to form a longitudinally extending guide-Way 1G. The stationary (leadplnte f)- and the removable (lend plate 10 form .therear Wall or" my smoke chamber.

I will now describe the structi'rre by "Which-- the floor 0f the smoke chambertis formed;

17,18ancl1'f) are three deml'plateefoi'nn ing sections of a floor plate which-are fitted together as hereinafter (lGw'P-l'lll-OCL.tO'fOJIlI the floor otniy draft chamber;

The central plate 1'? is plOVltlQLl With'np- \iltlltl yOil-SCUKXWUORS 2O anti 21 Whicheverlie the inner'eclges of tl'lQ Sl'd dencl plates 18 211M219,- the body of the cleiulpliite 17 being; in lmrizonrtz-rl iiligni'nent with the bodies of the dead plates 18 and 19 and fitting between the inner. o 'sposi-ng of the (leziilplates l8 and 19.

The oft-Set portions 28 and 21' are P1'() videcli with: longitudinal slots Ztilll 2?, tl'irongfhwhich extend loop portionsfl l and 25 which are eeenred'to or form pin-tot the side (l ml plates 18 and 1?). These 'lUOP POF- Lions-'2 and project upwardly above the surface of the (iii-set portions it) and 111 so as to receive weilg'iiig keys; 2t; and JT. By this ineii'nfs the ileaclplates l7. l8 and are securely lUCliOtl together to ii'orn'iii unitnry {lo-1n: etrnetnre.

Tire renrr eilgea of the '(ldfl plates 1?, 15.

and 19 are turned up, as indicated at 17, 18 and 19 to form inverted loop portions 28 adapted to receive the upwardly extending edge of the transverse groove portion 13.

The downwardly extending portion of the loop 28 is turned upward to form a transverse groove portion 29 fitting snugly within the groove portion 13. Theupper guide plates 14 are provided at their forward ends with forwardly extending downwardly directed hook loops 30 set in an opposite direction to the transverse groove portion 29. 31 is a rod which fits within the transverse groove portion 29 so as to extend across the rear end of the smoke chamber and fit at its ends within the hook portions 30.

It will be understood that the lower portion of the stationary dead plate 9 is formed so as to have a certain amount of spring, and that the space between such dead plate and the hook portions 30- is less than the diameter of the rod 31. It will therefore be seen that in order to force the rod 31 into position, it is necessary to force the ends of such rod between the hook portions 30 and the dead plate 9, which dead plate yields in order to permit the rod to pass into engagement with the hook portions 30, and thus lock the rod in position. By this means it will be seen that the dead plates 17, 18 and 19 forming the floor of the smoke chamber are securely locked to the removable dead plate 10.

The forward wall of my smoke chamber is formed, as is common in all draft chambers, by a spark arrester. My spark arrester, however, is constructed as follows In diametrically opposite positions in the wall of the locomotive body are formed 1ongitudinally extending slotted openings 32, see Figs. 2 and 7. v y

33 is a rod which extends transversely of the locomotive body and through the slotted openings 32, projecting outward from each side of the locomotive body. The dead plate 17 is provided with a pair of loops 34 and 35 at its forward end through which the rod 33 extends. The dead plates 18 and 19 are each provided with loops 36 and 37 through which the rod 33 also extends.

38, 39 and 40 are screen frames, each provided with screening 41 so as to prevent the passage of sparks.

42 and 43 are flange members secured to the upper portion of the locomotive body, such flanges being inclined inwardly towards their lower ends. The lower portion of the flange 43 is separated at each end from the wall of the locomotive body as indicated at 44, so as to permit a certain amount of spring to this portion of the wall when the parts are secured together, as will hereafter appear.

The central portion of the flange 42 is off-set slightly outward, as indicated at 45 menses so as to receive the central frame 38 and the over-lapping portions of the side frames 39 and 40, as indicated in Fig. 3. u The side portions of the frame 38 are provided with longitudinal slots 38 through which loops 46 extend, such loops being secured to or forming part of the overlapping portions of the side frames 39 and 40.

47 are keys which extend through such loops so as to securely hold the frame members together. The lower edge of the central frame member 38 is provided with loop portions 48 and 49 through which the rod 33 extends.

Each side frame 39 and 40 is provided with loop portions 50 and 51 through which the rod 33 also extends. rod 33 it will be clearly seen that the lower edges of the frames 38, 39 and 40 are securely connected to the forward edges of the dead plates 17, 18 and 19 forming the floor of the smoke chamber. 52 are hollow bosses which extend outwardly from the body of the locomotive and into which the projecting ends of the rod 33 extend. The bosses J1 52 are provided with rearward extensions 53 provided with a key orifice 54, a portion of such orifice extending through the open centre of the boss 52, as clearly indicated in Fig. 7.

55 is a wedge key which is driven through the orifice 54 with its forward edge in engagement with the projecting end of the rod 33, and thereby, as the key is driven, such rod is forced forward at each end, the screen frames 38, 39 and 40 being permitted to move slightly forward by reason of the spring portion 44 of the flange 43. Also a forward draw is exerted upon the dead plates 17, 18 and 19 and their interlocking connec tion with removable dead plate 10 of the rear wall of the smoke chamber. By means By means of the of this draw the removable dead plate 10 is drawn forward at its lower end, the upper edge fulcruming in the groove 9 thereby drawing the lateral extensions 11 into tight contact with the rear face of the stationary dead plate 9 at each side of the orifice 9", such dead plate being sprung slightly forward and thereby forming a tight connection between the dead plate 10 and dead plate 9.

As will be clearly seen on referring to Fig. 2, the movement of the central dead plate 17 is permitted in this direction by means of a slotted opening 56 through which the exhaust nozzle 2 extends, and the slotted openings 57 and 58 through which the securing bolts 59 and 60 extend, which securing bolts serve to secure the central dead plate 17 to the flange 2 of the exhaust nozzle 2.

61 and 62 are two plates each provided with loops 63 and 64 by which the plates are swung upon the cross rod 33. The outer til) endsof the platesCl and62 are curved so as to fit' th'einternal surface ofthe locomotive body to hold theplates ina forwardly inclined position. The plates 61 and 62 form a battle member to which is secured an adjustableplate--65 provided with slotted openings 66 through which securing bolts67 extend.

From this-description it will be seen that I have devisecl a verysimple'struct-nre which may be quickly and easily interlocked together to form'the draft-chamber of a locomotive, dispensing with the large quantity of bolts which are ordinarily used for securing the parts together, and which of coursenccessitatei-a large expenditure of time to remove-or to'pla-ce in position when assembling or disassembling the parts during' the-repaiir of the locomotive.

Itwillbereadilv understood that all the parts are divided into sectionsso that they are readily withdrawablc or inscrtible through the ordinary man-hole formed in the front end of the locol'not-iv'e body.

lv -h'at l claim as'my invention is:

1. In a draft chamber for locomotives. the combination with'n locomotive body pro vided with a deadplate forming the rear wall o? the smoke chamber. of a floor plate forming the'floor of the draft chamber, an interlocking connection between the rearward cndo'l said floor plate and the rear wall dead plate, spar: arresting screens forming the for 'ard wall of the draft chamber, an interlocking connection between the lov-xe-r end of the screens and the forward end of the floor plate ofthe drat't chamber. and wedging means for. forcing: the lower end of thespark arrester and floor plate and their interlocking connections forward so as LO force them into tight contact.

2. In a (lI'fl/ft chamber for locomotives. the combination with a locomotive body and a stationary dead plate forming the rear wall of the draft chamber. of a movable dead plate swungr at its upper edge upon the stationary dead plate, a. floor plate horizontally guided at each longitudinal edge in the lOCOH IOtlVQ' body, aninter-cngaging connec' tion between the floor plate and the swinging dead plate, a spark arresting screci'i, means for detachably securing the screen in the forwaad'end of tlre locomotive, an interlocking connection between the lower end of the spark arresting screen and the tloor plate. and wedgring; means for forcing the lower end of the spark arresting screen. l'lcor plateand movable rear wall dead plate forwaad, carrying the intcrlockiin;- conneclions into tight contact.

3. In a draft chamber tor locomotives. the combination with a locomotive body and a dead plateextending transversely of the locomotive body and forming the rear wall cf the draft chamber and having a transverse orifice there-in, of a removable dead plate, a hinge connection bctweenthe upper edge of the removable dead plate and the stationary plate along the upper edge of the aforesaid orifice, lateral extensionsextending from ca h cud Oi the removable dead plate adapted to Contact with-therear face of the stationary dead plate when the re movable dead plate is swung forward, ailoor platehorizontally guided in the locon'iotive body. an interlocl'cing connection bc= tween the floor plate and the removable dead plate. a spark arresting screen detach-- ably mounted in the forward end of the locomotive and adapt-ed to spring forward at its lower cnd, a, interlocking connection between the lower end of the spark arresting screen and the floor plate and wedging ans co-acting with the interlocking connection between the spark arresting screen and the floor plate forcing-1' such partsforv-:ard and adapted to draw the connection between the floor plat. and the movable" rear wall dead plate into tigl'it contact.

-t. In a draft chamber for locomotives. the combination with a locomotive body and a stationary dead plate tori'ni-n'g the rear wall at the draftcl umber ot' the locomotive and having an orifice therein having its upper ct turned upward in hook form, a removable dead plate lmving its upper edge turned rcarwardly in hook form to engage the hook portion of the stationary dead plate. lateral extrusions oft-set rearwardlv from the body of the removable dead plate to extend to the rear of the stationary dead plate at each side of the aforesaid orifice,- a floor plate longitmlinally guidedat each edge on the locomotive body. an interlocking connection between the floor plate and the removable dead plate, a spark arresting screen reniovably mounted in the. forward end of the locomotive and adapted 'to springc' :lorwardly at its lower end. an interlocking, connection between the lower end: of the spark arresting screen and the floor. plate, and means cooperating with such i nterloc-kin; connection for drawing the floor plate and parts connected thczcto forwardly into tight contact.

5. In a draft chamber for lmomotivcs, the cornbii'iation with a locoinotive body andrcar dead plate forming the rear Wall of the draft chamber. of a removable dead plate pivoted along" its upper edge to the stationary dead plate and having; its lower edge turned torward and upward to torm a transverse groove portion. a floor plate longitud'h nallv guided in the diametr cally opposite nulls of the loconmtive having}: its rear edge tuincd upwardly and over the upwardly extending ends of the groove portion of the movable dead plate. and having its-extremercar portion fitting the groove portion of-the movable dead plate, a crossrod extending loo through the groove formed by the rear portion of the floor plate and the lower end of the movable dead plate, means carried by the locomotive body at each end of the rod for detachably engaging the same, a spark arresting screen carried by the locomotive body, a detachable connection between the spark arresting screen and the floor plate, and means for co-operating with such detachable connection for forcing the floor plate and the interlocking connection formed by the cross rod and engaging parts of the floor plate and movable dead plate forwardly into tight engagement with the portions carried by the locomotive body at each end of the aforesaid rod.

6. In a locomotive, the combination with a locomotive body having dianiet'ical longitudinal slotted openings in proximity to its forward end, of a draft chamber comprising adead plate at the inner end of the draft chamber, the lower portion of which is adapted to spring forward, dead plates forming the floor of the draft chamber, a detachable connection between the floor dead plates and the dead plate forming the inner end of the draft (jrhamber, guide ways extending from the locomotive body in which the side edges of the floor plates are slidably held, a transverse rod extending through the diametrically slotted openings of the locomotive body so as to project from the body and to which the floor plates are connected, spark screens secured transversely in the locomotive body and attached at their lower ends to the cross rod and wedging means outside of the locomotive body for forcing the cross rod forward to exert a draw on the floor plates and the rear wall dead plate to which the floor plates are connected.

7. In a locomotive, the combination with a locomotive body having diametrically opposite slotted openings in proximity to its forward end, of a draft chamber comprising a stationary dead plate extending transversely of the locomotive body and forming the rear walls of the draft chamber and having an orifice therein, a movable dead plate pivotally mounted at its upper end along the upper edge of said opening, lateral extensions from the movable dead plate adapted to engage the rear face of the stationary dead plate at each side of the aforesaid orifice when the movable dead plate is drawn forward. dead plates forming the floor of the draft chamber, guideways extending from the locomotive body in which the lateral of the floor are longitudinally movable, a transverse rod, holding means at arh side of the locomotive body into which the ends of the transverse rod extend, detachable connecting means between the lower portion of the movable dead plate and the transverse rod, detachable connecting means between. the floor plates and the transverse rod, a forward transverse rod. extending through the slotted openings of the locomotive body, loops formed on the forward ends of the floor plates through which the forward transverse rod extends, a spark screen held in the forward end of the locomotive body and having loops at its lower edge through which the forward transverse rod extends, and wedging means engaging the ends of the transverse rod projecting from the locomotive body adapted to force forward such rod and the parts connected thereto.

8. In a locomotive, the combination with a locomotive body having opposing slotted openings formed in the wall thereof, of a draft chamber located in the body, a transverse dead plate having an opening therein and forming a portion of the rear wall of the draft chamber, a movable dead plate fitting the aforesaid opening to complete said rear wall and pivotally mounted at its upper edge along the upper edge of the opening, lateral lugs extending from the movable dead plate to engage the rear face of the stationary dead plate, a channel portion forming the lower edge of the movable dead plate, dead plates forming the floor of the draft chamber guides carried by the wall of the locomotive body in which the outer longitudinal edges of said floor dead plates slide, a channelled extension at the rear edge of the floor dead plates fitting within the channel portion of the movable dead plate of the draft chamber rear wall, a transverse rod extending through the channel portions of the floor dead plates, stationary hook members carried bv the locomotive body and engaging the ends of the aforesaid transverse rod to limit its forward movement, a rod extending transversely along the forward edge of the draft chamber floor and engaging with the dead plates forming such floor, hollow bosses carried by the locomotive body into which the ends of the last mentioned transverse rod extend, and wedging means extending through the hollow bosses and engaging the ends of the transverse rod to force the same in a forward direction.

9. In a locomotive, the combination with a locomotive body having opposing slotted openings formed in the wall thereof. of a draft chamber located in the body, a stationary transverse dead plate located in the locomotive body and having an opening therein. a movable dead plate pivotally mounted at its upper edge along the a form-aid openin stop means limiting the forward pivotal movement of the movable dead plate. a channel portion formed at the lower edge of the movable dead plate, dead plates forming the draft chamber floor slidably mounted in the locomotive body, a channelled porion tlon forming the rear edge of the draft chamber floor and fitting the channel portion of the movable dead plate, and \retlging means for drawilg the draft chamber floor in a forward direction to draw the movable dead plate into close contact with the stationary dead plate to close the opening of the transverse (lead plate and screens forming the forward Wall of the draft chamber and connected to the floor thereof so as to permit the aforesaid movement of the draft chamber floor during the wellging operation.

GEORGE SAMUEL BOYLER. 

